What is the average velocity between 3.00 and 6.00 seconds?
2 answers:
Answer :
(1) The correct option is, 9.00 m/s, east
(2) The correct option is, 27.00 m/s, east
Explanation :
Average velocity : It is defined as the change in the displacement with respect to the change in time.
Formula used :
where,
d = displacement
t = time
(1) Now we have to calculate the average velocity between 3.00 and 6.00 seconds.
The average velocity between 3.00 and 6.00 seconds is, 9 m/s, east
(2) Now we have to calculate the average velocity between 12.00 and 15.00 seconds.
The average velocity between 12.00 and 15.00 seconds is, 27 m/s, east
Therefore, (1) The correct option is, 9.00 m/s, east
(2) The correct option is, 27.00 m/s, east
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This means to raise the temperature of 1 g of water by 1 degree Celsius we need 4.18 joule of energy.
Now, look at the question. We are asked that how much amount of energy would be required to raise the temperature of 25 g of water by (54-50) = 4 degree celsius.
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Q = m C (temperature difference)
Have a look at pic for answer